Tire-builder&#39;s tool.



G. McNEILL. TIRE BUILDER'S'TOOL.

APPLICATION FILED FEB-10' I915.

Patented Mar. 28, 1916.

GEORGE MONEILL, 0F DETROIT, MICHIGAN, ASSIGNOR TO MORGAN & WRIGHTQA CORPORATION OF MICHIGAN. I

mine-BUILDER' TOOL.

Specification of Letters Patent.

- Application filed iliebruary10,1915. Seria11to. 7,299.

To all whom it may concern Be it known that I, GEORGE MoNnrLL, a

citizen of the United States, anda resident of Detroit,.'county of Wayne, and State of Michigan, have invented certain new and useful Improvements in Tire Builders Tools, of which the following is a full, clear,

and exact description.

' This inventlon relates to tools for tire builders, more particularly to tools for use" in'stitching down fabric in conforming the same to the configuration of a ring core building a tire.

An, objectof the present invention is to tails of construction and combinations. of

parts hereinafter fully described. and

of the advantages of the invention.-

The invention will be readily understood from the following description taken in connection with the'accompanying drawing in a which:

Figure 1 is a longitudinal sectional view.

through the tool; Fig 2 is an elevation of the tool partly in section; Fig. 3 is a fragmentary sectional view showing a modification.

Referring now to the drawing in which like characters of reference designate. similar parts, the tool is 'shown to comprise a handle 10 by means of which the tool may be manipulated and whichmay be mounted or not asdesired on any apparatus, and a support 11, the latter being concentrically secured to the end of the handle by means of a screw 12 which binds the support against rotation upon the handle. The supturn on the part 13 of thesupport is'an annulus 16-'Wh1ch co-acts'With the other part Patented'Mar. 2 ,19 6.

14 of thesupport in forming a ball race '17 for anti-friction balls 18, the-latter in one embodlment being threaded upon a wire ring-l9,'which is itself rotatable in the ball:

race about the axis of the support, the antifriction balls being individually turnable transversely upon the'ring as an axis. However, itis not to be understood that the in- .ventlon islimited to this particular construction, since the anti-friction balls," as

are shown at 20, may belloo'sely confined."

between parts 21 and 221of. aJ-sup'port, the

ed es'of the. parts being crimped over the ballstot hold them inplace and permit of their movement bodilyin'fthe' ball race thus formed,- and also toi-p rmit'of their rotation universally, that""is,jeach ball may rotate freely on anyv of itsi axes. The annulus 16 1s formed-mthagroove.16,"and the part 14- ofthe support' is formed with a mating groove23,itthse grooves co-a'cting in forming a ball race for ball bearings 24 which promote the free rotation of the annulus upon the support.

In operation. when the tool is moved over the tire, each of the ball bearings generates a corresponding line upon the tire at all points of which the fabric is pressed in close contact with the next underlying layer of fabric, the balls rotating freely as above described, whereby they exert no stretching or distorting effect upon the fabric. Since the ring core upon which" the tire is built is power-driven during the operation of stitching the fabric, the above described lines generated by the balls of the tool will merge into a continuous surface as the tire rotates past the tool whereby the layers of fabric are closely united throughout and pressed to conform closely to the configuration of the ring core.

What I claim and desire to protect by Letters Patent is 1-. 1A tire builders tool embodying a support, having a ball race in the periphery, and anti-friction balls in said ball race for contact with the tire.

2. A tire builders tool embodying a support, an annulus rotatably mounted on. the

support and co-acting therewith in forming a ball race, and anti-friction balls in said ball race for contact with the tire.

bearings confined between said annulus and said support;

5; A tire builders tool' comprising an annular support, and an anti-friction device rotatably. mounted on't'he periphery of the support adapted to contact with the tire.

Signed at Detroit, this 20th day of J anuary 1915.

GEORGE MoNEILL. Witnesses JOHN QARLsoN, J. H. SWIFT. 

